CVE-2009-4633

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    CVE-2009-4633

    Published: 10 Feb 2010Last Modified: 10 Apr 2026

    Summary:

    Details: vorbis_dec.c in FFmpeg 0.5 uses an assignment operator when a comparison operator was intended, which might allow remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted file that modifies a loop counter and triggers a heap-based buffer overflow.

    References: http://secunia.com/advisories/36805, http://secunia.com/advisories/38643, http://secunia.com/advisories/39482, http://www.debian.org/security/2010/dsa-2000, http://www.mandriva.com/security/advisories?name=MDVSA-2011:060, http://www.mandriva.com/security/advisories?name=MDVSA-2011:061, http://www.mandriva.com/security/advisories?name=MDVSA-2011:088, http://www.mandriva.com/security/advisories?name=MDVSA-2011:112, http://www.mandriva.com/security/advisories?name=MDVSA-2011:114, http://www.ubuntu.com/usn/USN-931-1, http://www.vupen.com/english/advisories/2010/0935, http://www.vupen.com/english/advisories/2011/1241, http://scarybeastsecurity.blogspot.com/2009/09/patching-ffmpeg-into-shape.html, https://roundup.ffmpeg.org/roundup/ffmpeg/issue1240, http://www.securityfocus.com/bid/36465

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High